<!DOCTYPE html>
<html lang='en'>

<head>
    <meta charset='UTF-8' name='viewport' content='width=device-width,initial-scale=1.0'>
    <title>closure</title>
</head>

<body>
    <script>
        // Math.pow(4, 2);
        // Math.pow(5, 2);

        function makePower(power) {
            return function (number) {
                return Math.pow(number, power);
            }
        }

        //测试：求平方
        let power2 = makePower(2);
        //测试：求立方
        let power3 = makePower(3);

        console.log(power2(4));
        console.log(power2(5));
        console.log(power3(4));

    </script>
</body>
</html>